{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1885753",
    "entityType": "User",
    "nonce": "0xe0f5bb19676208f1d58e7520e6b8c23c206a46c26313f9a12520da7e4d4476bc",
    "signature": "0xa90d9887a06a224ea3d374891e69495f6d7c6ffc3e74ced09b68081368de486448c21bb36343de947519b7560edf3188b4bb70564a37b5f66bfe45601789ba701c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}