{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb5f9baec4d421210c593b0bdc0a5a7a6b418ce69b17491624ce8f2c692c8f71e",
    "signature": "0xe567ac8bbb320e4fdc3a7ee91419b30807b6571e3caa3aebb225dd07dc9b387a12aa7e7a7d03503a3f6c35d8a4ad3352165054fd6256a4f1b57aa8533554b7bc1b",
    "signer": "0xC6D07D8dAa84F45Deb6A7721295C1842D003DF07",
    "userId": "45330756"
  }
}