{
  "manageEntity": {
    "action": "Save",
    "entityId": "1764211468",
    "entityType": "Track",
    "nonce": "1794072993260056670",
    "signature": "0x22f10b3ae44e81aacaa8eaccdde349f6455ab5797da59d3a9e90c88967de39f236b91cfea9f73127808cc976410e834bbcfe7409f15c61ce8da027abe03d047b1c",
    "signer": "0x996D30B2742a40E99bA6b859ca600bA67916B067",
    "userId": "979334120"
  }
}