{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1575278",
    "entityType": "User",
    "nonce": "0x2053090c4dcb0951470cbe225c53d5a57d90f8411760c345355231640879a2fe",
    "signature": "0x2a6a60736286a034846d4527fdd17c1c0f5bf74f7e71bfd755ed1c2326c2d2b431d9afa1bf13a28d45b4dc902e9d890911a6de00b48c89aa0fce3b691bce8bf71c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}