{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0xcf830454e0818a45206845d5b1d64887c29821eb1c0d5aa223deac93417bb03d",
    "signature": "0xd9638f138459b9f619fea00c670d5ed4035363d3ad26b8f42fa4bdc76b301bc921506b774845f5f22ec0710a2f39a8e2294bbc7fb4f1ad32dd1a2b5f213891e11c",
    "signer": "0x997f52c4af8280b4e3F3F5A559DC3565DC8C8fB5",
    "userId": "337364291"
  }
}