{
  "manageEntity": {
    "action": "Save",
    "entityId": "20063919",
    "entityType": "Track",
    "nonce": "0xc4f45e382b06fd43a2a0e84b8605a39d6a00e3d6fb3c9b661c1c58045b33dcd5",
    "signature": "0x3d43a21bf9bc46b9add6b911959c75a243211eccea0fcdd252f264a25942206440592d0289a4ffbe2e3223bc2187b2e558fde183947e8c7fdbae2a984d8cd0fb1b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}