{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8835e0385e72d1de6e618d8a6320591f068bbd7e63d9f255160ec096f2af3bf2",
    "signature": "0x3a983e1e27b19c8d24a072bc27382e84e5ae3f76efc6c5b5449f513952956ca939e304d9099a326783d13b685b2ffd0a247cd3f7886f5cfefd9992ace6721bd71c",
    "signer": "0xa9C1a2BDeD896d3f122E366aB647BF1C74C00eBA",
    "userId": "209707164"
  }
}