{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "188746372",
    "entityType": "User",
    "nonce": "0x7a8b244f888e1c6c018c8e8304e2aaa9a7fdf997b19062c0e63f31c1b3e387d6",
    "signature": "0x0a25c6354e68b12b55584962ba7a2e3e5e6b5cf66b96a8221e56adbcafacc58c0e53e6d07ddb53bed5bbda90b5fe493b19d2b666397b3f77f5f728369b9c85751c",
    "signer": "0x73676516aC24232516e3EaD23a00B1fEf8BFaf93",
    "userId": "210324631"
  }
}