{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4245977aa5dd57eea221eb4b9f0e443f27d64585b8b717cdff0b43b5fc61e835",
    "signature": "0x568daa1da862d1bf39e52778869289b50eff264c28d82a1b3781d8d1aa0d34967cec8ba115ba667be4da51b479e06b74263e27b04e0c582214898747f98016a01b",
    "signer": "0x4bab5Cd522B53b8B987980041e9789631B6a50C1",
    "userId": "627782178"
  }
}