{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "890889753",
    "entityType": "User",
    "nonce": "0x0f5c064fe63c0889c08a9b915161a69877cee476fafe708b5a5c75fd92d216f9",
    "signature": "0xf015e1c3109cf0382e4115c45fd4596f05f3313045295d0726afed996b173cec40e3b30dc31c0db698dd0b5b65aa843c0a182c7210bad35337dbb99e35f0f1d31c",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}