{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301067",
    "entityType": "User",
    "nonce": "0xa0b71b33c8035d74ef36a8cf66fec7872bcc9dd358348fa1e4510a62c0531c0a",
    "signature": "0x73e65075f3f7fba609e61adad3e324e7893beb6d2ff59948af64f38b8a1b5a2747ffad285cdb6f99e006a241f8af3edce940a4a3c6dac16b43d932aa1b50fcbe1b",
    "signer": "0xa033b00F73FC0a3537d218834CE1c86E5b4DCf8C",
    "userId": "347340"
  }
}