{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7f4f866b44a3e19363ebb353fcef044f47cb482b3450bac0a7bc21e23f3ad690",
    "signature": "0x85c33732a247c5ab05781574ecb921c8b628ec9a3603f49bd7062d5aade60e760739a528c1514230c787442d0698ea11edc5663ab2ebabf90cf898ab8ff172b91c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}