{
  "manageEntity": {
    "action": "Save",
    "entityId": "11330778",
    "entityType": "Track",
    "nonce": "0xbd2c0de7ef38e03c9a3ed2737b4a94f19f11f094a10fd156478872c60129d2de",
    "signature": "0xe9c85cf0c1320c30617913c11f5aec59da5a9fc2f561e0d34af0a18039d4ab55402a0ac3ca57e4d4f8e142809f578159b518a0cec0cab4b185a88b95ce9e6f801b",
    "signer": "0xfeBBAF2B7d9F5bE3DAA34bEe70259f61ac4aB836",
    "userId": "139146722"
  }
}