{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "357010",
    "entityType": "User",
    "nonce": "0xa263b8b4523cec9c07389c68771baccd5a3a19bcbd35a8efe9a100a212b279c0",
    "signature": "0x3feff4c5e93efb7d90a95a37bc4d03a09e72e3099a952c7aeae5eb4838f60e0e5095e3af2199ca3ea435270c8e570a3ea26df0610759392e3a6b77b8e6997eb31c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}