{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a29f5ba63f60cd33c1b4e2aa37bd7fdce04846b4d156f98aebd3057c7be9f73",
    "signature": "0x96eb6650a5bdb044c90aa4fc63495cfe9946292721b6e2da4a037a9f29284ef11bcde6fa4f1efa997d7af8121e9fdba6de1d4192ff752b05489a42053da311611b",
    "signer": "0x46AC3E501e564C8a70D154d3D56d1448B6750293",
    "userId": "479478233"
  }
}