{
  "manageEntity": {
    "action": "Save",
    "entityId": "1192901000",
    "entityType": "Track",
    "nonce": "0x15282419dc294bf8edf309e3bc053ae47497b33ee64d3e3731e1f287ce9aba7f",
    "signature": "0x68e98af594cb0ff84fa7d6ddab64936008b4b613fa4b3a2e3ec04724ef45b3492fcec2ba154fbce3b4aeae36741becfb71a4d8f9abeeaa787186143dcf1918ff1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}