{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381576190",
    "entityType": "User",
    "nonce": "0x8aa5e65b2a093681cbfc4f7a8434efbfcefbe11eba5a55894597e772ad1236cc",
    "signature": "0xfdfe8a4b467d2f187663d288fdc65bbec1c30f3657e2893fefe0bd8d434b645d318c0de4b2d7b5ca2a8f0c30c53591201d5d02c0d91bf31c8ea0c5ba8372ea571b",
    "signer": "0xF3C58E503389f1A197a2cA77899068B131810baB",
    "userId": "831854472"
  }
}