{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc6b29a4550a23504fb2168058f197342d18676b0994d5df59d6ae4b4142418ad",
    "signature": "0xec87d58edbaadbe7a3dcf86a9cb4d55d3ac2502b3aa82012d1cd8a44bd7dc52e3daa1aa0bf0cff5682fe9fc9c0e517b3fbda41f4d58a7e2f3cb8a4844d39f8f01c",
    "signer": "0xe840Ad6F5f1ed80eAB032EeF491f6D569ad605fB",
    "userId": "907085528"
  }
}