{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d8b7803335ad411562e097d37a3ecb71c1f5f1876b63d8d44304e4380833f62",
    "signature": "0xb7f6f82d1d2c60da964e37ffcfa629728e32d005313fa61696454758f354cc071056836c9de3ce428f776e21038e14a6c28a0ceab16c5715f99d1519f5def9a91b",
    "signer": "0xca7B5EAB84626f6EA0DaC7A3d0e1d95Fbe50D9F7",
    "userId": "686651717"
  }
}