{
  "manageEntity": {
    "action": "Save",
    "entityId": "35172455",
    "entityType": "Track",
    "nonce": "0xc0bebe202dae1f657cf9220c5cc94a29efff31c93be4c03f2aec48c1ab92a8ce",
    "signature": "0x546c83c91d24fd4c4b9ca6f4abb3e8241e6d50308f109e5f4916e122eb2660ca3aaad5f48700fbc2413724189ba373e1539cd75de7b64d7bbfef52f3bbc6d3b51b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}