{
  "manageEntity": {
    "action": "Save",
    "entityId": "1801930125",
    "entityType": "Track",
    "nonce": "0x667af74d792ddff9bf2314860225b6464d59d1ab5de84b802f502e97a6cbf25c",
    "signature": "0x07f37024b45e22306790b40ae19768fbd172170a6583e0cdfd662047799301763e0a86ed1d13dd9cd5630d47087129cb381b9938cd48d3cd4d7b4c12fddf5aff1c",
    "signer": "0xa82670FA9B885fC5E3790543627F6F4A7A5e6D65",
    "userId": "797142451"
  }
}