{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "25345",
    "entityType": "User",
    "nonce": "0xd449479ccfdc7ca6cdbd9e06c6129a60b963dd2c9366d52b2af403a98b8fa8ce",
    "signature": "0x53a9f4078de63f09e091cbbfaa7bd05f8b9706296e604e2a663d6c35f30f963b5a05980dce6d01961639434e02765bc2ef39da3c5a42662018d5b0cd80edbc381b",
    "signer": "0xcc9cCc523005B394381478381D34DddB8558A28f",
    "userId": "957873025"
  }
}