{
  "manageEntity": {
    "action": "Save",
    "entityId": "2025411273",
    "entityType": "Track",
    "nonce": "0xda261de5df0a4f2f5009c3eb288ac03bf6cb4657e9c1f47424f2ae222362b0a5",
    "signature": "0x27ae8b83719e44d83a05f740fdf3fccf2522559541f4caaf1efd1ebfcb42a2eb3e5e3cd92ec82f6a56bc4e29c7e9514287cc57d3a00fc084832e814353488c1a1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}