{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xff944585a0444480905a5ea0593e74c73a469bf7c8d27fed24e8c21d5cb879e3",
    "signature": "0x8e9469f8a2c69cbc9412456298e2ff33ca366a635d454ad95d45e14c2853d31335b7571e7d0fc63e07cbe03d2d37d06c5481d155e7519ef711d70e6f20e3c6a01c",
    "signer": "0x744719ad48A963723dFD8B4Cf168faB0F9bbDF59",
    "userId": "68746717"
  }
}