{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2e20d0db54b23e1e8ff83acf98bc5033383f6e54c59f8b62580e9f01433ec06c",
    "signature": "0x1ff24efeabddbd94902afe867956a315cee15500b07917eacf0eaa6d1e60413f79eb9aac6a1d04ab9544ba94ccc0e990bea9c01bf5ab604f0b4d6cc8cafde6121b",
    "signer": "0x457d893FaB04AC93bA18E9eF790e77eE4b0fdF15",
    "userId": "158682363"
  }
}