{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320356",
    "entityType": "User",
    "nonce": "0x6e1db1bce3adb081d64b49ccf6cde82075e2e2ec370b18ef7095af316cc2ab6b",
    "signature": "0x5357720a51c6399b0f4cff6131ea694bd737f8b17bc3cd9581b2fb737577bd4e565e211560ba7a43a5b6013e28fc9f8e9b5c519dbf38000b79d682ea1d099d5f1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}