{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0xafd94c0cd2137719052ca556c8c74994a0578e9b43884b25aa64408c6908a64c",
    "signature": "0x54ba445976fe24875d81176b760208563a11daadfb93950abbf89c7fe10ec0f233435ff6eb86276fcf24d8a8d342aa9667dc25fe95a4e66d71394215ece9db981c",
    "signer": "0x5c8AfDEAc05FbB157876C04BF36E221C2318278E",
    "userId": "593502567"
  }
}