{
  "manageEntity": {
    "action": "Save",
    "entityId": "326964850",
    "entityType": "Track",
    "nonce": "0x95b05e5efe2d35ad457bbf3e315ce8ff23091fbbe9c34fed7dcf8cb8a2f1c485",
    "signature": "0x6b8b80582f23b9f99da23060e7851186eececfa40429c3ea031340401e93e85d286178796eb29866e2ef4facb43be8ade982c7931ecf525ab4a2624b92f45b671c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}