{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x692ec2e0632c5c349ea722ef63faa1d0cce3051905cda2c10727d84dba569734",
    "signature": "0x47d0e2e7ab64ec2cb5115eee1f97e6a77b130e28bb098e4949af0ea17ea251f96964dae568f4cbb883f39a69d379baa688b1c7000759b69b070d23bc74f7550b1c",
    "signer": "0xcE951D13a2cF562669A11440D304769eE103D57c",
    "userId": "557369513"
  }
}