{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215830",
    "entityType": "User",
    "nonce": "0x548213b60ba49671402f51fe87d782bcdeb1793f43644e0d4123eeaa7e625799",
    "signature": "0xd327015959fed699049f115e45d77e96be7e2ff9e36a544624c417292900d67b478aa031435579616edf1916c52abc7dc19dc4e6e83068bb3795554f139dcd281c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}