{
  "manageEntity": {
    "action": "Save",
    "entityId": "1672911606",
    "entityType": "Track",
    "nonce": "0x08138a6c3f73112be6d16284d262d24f2e6b0167aa57c3416711190c24e7f696",
    "signature": "0xfafdc885fb26f98c6dcc6d0d77fd2c40027d4aef58e95ae00ce33b4a8440d4604bbd21de22a817e55f1db9340452457e98c6ed6879dc66e4a560d3533704573e1c",
    "signer": "0x8d9D00A94c3B1C9992e3CA4386AbBC6345B2E876",
    "userId": "396658415"
  }
}