{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338616",
    "entityType": "User",
    "nonce": "0xbe56697c578f3e78bb0cf9aa2a6dbba923eefb49b68135edfeda115eda43326d",
    "signature": "0x962b7a7413a6ae81d2f2c175f4272e37ecd1728301458ec6d14b796ccd0f7b2e30ecc34f581cb54aafc3254c5492464cd279974369584cbdc9c83fcf84acb8361b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}