{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "340690975",
    "entityType": "User",
    "nonce": "0x51d493b9fc96721537ac659a36f68fc6ed0477e7e1a7615e082aee07c9b0cbd9",
    "signature": "0xc017ca523d0c496d7553c7c133afe36d5753ecc1d61ca4dc75648856d5c6639241af69b2ed5233bd3c11de22700f96f984bff6d90f6b30f3430cd9e8c30da07f1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}