{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x567a84dd17792de564a83ed39d07df82854ef4753c4a5157d216b7802854fdb3",
    "signature": "0x18a27d70fbae56cf370bda750c28ca8c495d78896c8dba56617f787aaeb29e5d53b878573dd82cdea1272e5d83ed2c591e8ffd6bc25798545d6bd63402a2e9541b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}