{
  "manageEntity": {
    "action": "Save",
    "entityId": "1306503596",
    "entityType": "Track",
    "nonce": "0xf52df6c0240b6fd94a83a125bdec3330d48702860fc3526926f31258332ab680",
    "signature": "0x1fe014fd73b1d95649056de12fe210786ff52850a94566267a515368487ec3e74a37a5f441161f04517236a521cb415cb91aaec01687522d990766ac21eb8d411c",
    "signer": "0x019c1Ea6f901A4f7AeAa1daD2842a34Fdf9A9FB2",
    "userId": "798348033"
  }
}