{
  "manageEntity": {
    "action": "Save",
    "entityId": "1926930724",
    "entityType": "Track",
    "nonce": "0x07510fdd9d81b31a76ad43e20dbc32882b7b0ec368dac504c840e40bab1a26e2",
    "signature": "0x2d2757ec6c2054048d90885392a4e788d7c7456e39c3cd1cb21c192cf163744d3e77f4208ecc10517d1dbc5ebcdc6ae1086f7db215cd5560e6eeea78433b43491b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}