{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "433774273",
    "entityType": "User",
    "nonce": "0x344b5b5ddfa519df279c8a05f8aeaec19a2b9491740aaad89fdd6b5dba34e7c3",
    "signature": "0x590237611f719be770c2dfed9432df841bae02cba5d881c936dd5d404d7653c3079939b31e950b1705f63e5059c00947319b7df220130192a0c0b000315c7a441c",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}