{
  "manageEntity": {
    "action": "Save",
    "entityId": "285468",
    "entityType": "Track",
    "nonce": "0x3cd1349ae5e96f1f403496ec34109fdfb52bea0906b5ff3b67ff11e2fcf2445c",
    "signature": "0x01e40abbaef2d0e8bdbd8f2fef73503b8aed29ed34f8fb33d662924e22e7fa71597fce35320bc72f6becc86b02ca28ddfea5a02cd498eecf4c380706907404071c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}