{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216182714",
    "entityType": "User",
    "nonce": "0xa3ae9763981c62222dd4e3ef46e57fe5506e60ed318f74be18380806207b2dde",
    "signature": "0xb787e493fb3aaf82aa3980030922cd2453394e17569f9ff7b0f8e202b54ea6401958ddbb50944a8a60c36b9be9a16ddb2e0fd4eb99d6d1714031073f158acb8a1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}