{
  "manageEntity": {
    "action": "Save",
    "entityId": "1229112258",
    "entityType": "Track",
    "nonce": "0x17831bfe3496281985a4f3375c63b597157a63b1e44424865e717c888051a25e",
    "signature": "0xe9fe8f73f9e4ceb0a029e50087e5dcca249a80312ba2c0e18eaedcfb38b36ff93344c50dbd19b798bd7a054121959b14b69683cb6b9566040a269bef5b8d292c1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}