{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "521882155",
    "entityType": "User",
    "nonce": "0x4e35d04ac16ac131c9e8d6ecb35bd9977915c23700c7edf8d13b0eb8be8260c8",
    "signature": "0x80e09f4c81400f5331cd11920ac4977837ef8fd5a118293263765af395ddb8c56be6b2688169126ed3b3faf3e6572d07256544c33108def175b76107d966ad671c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}