{
  "manageEntity": {
    "action": "Save",
    "entityId": "1107087",
    "entityType": "Track",
    "nonce": "0x1679684fb3cd8e84f00669cdc4e30fe9f9d49e2c3f5d0775c449180c36f1b178",
    "signature": "0x7116225e5db7726111f4479406c2bd16b8e40addd04be8777b95532688c91db4549d4cd6b84c3b7285e36ce18d2d84c28079bfe0ea000c0b109e9458de968af81c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}