{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665370465",
    "entityType": "User",
    "nonce": "0xafa9db4c88eaef72f87d949dbd2208c07011efae7adecf91cdbedfe8fd2806e7",
    "signature": "0xac587c31a065e20300294860f0da2f9bee0403e064f7e900bac60b17122be3b21d8835a4e9e0997c2898d81bd933fd3de9f0cac51f5bf0d26b89ecdba8cc93ca1b",
    "signer": "0x187FC139B6A1FB1f058CE5Cb07C11E7C6E49695B",
    "userId": "132489194"
  }
}