{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321158566",
    "entityType": "User",
    "nonce": "0xe03b774bc02d147bf68857e4401850576d1576c2aad7c91569a2117b1c900799",
    "signature": "0xc29654fd167dd516e3c8ddb75e66892fa6c5269190d325469366e3304bf19e88206a75531b00a1d7d33cc39fb1a2757959fddc6b951bb3a26add18b9a071399d1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}