serverless-step-functions/lib/iam-role-statemachine-execution-template.txt

The module is AWS Step Functions plugin for Serverless Framework

{
  "Type": "AWS::IAM::Role",
  "Properties": {
    "AssumeRolePolicyDocument": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Effect": "Allow",
          "Principal": {
            "Service": {
              "Fn::Sub": "states.${AWS::Region}.amazonaws.com"
            }
          },
          "Action": "sts:AssumeRole"
        }
      ]
    },
    "Policies": [
      {
        "PolicyName": "[PolicyName]",
        "PolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [Statements]
        }
      }
    ]
  }
}