{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "251854",
    "entityType": "User",
    "nonce": "0xa1d3226cfba610e119945766b3c40833680fe6bb1b18a4d3b50e6e98a98a198b",
    "signature": "0x57ca3e1196356443618f45e8f375549cde75964ac241c41374eec6036db5c3fc77da582fae0971e2bac526b6c645e88acc1dbb5b000bf5e2084920010c877e571c",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}