{
  "manageEntity": {
    "action": "Save",
    "entityId": "2047557089",
    "entityType": "Track",
    "nonce": "0x2426cd708353adb7a915b964443f9839cbb4c9a1aeb0d406c1c183a76c97b19a",
    "signature": "0x66df433a4672ea3a275ae01f6b416fd93140d74ceb2bb3f8e5d66886265b46de32247091998759e55b6667bdebcef269495ae989f7cbb05c8a4a98ce61b76a6f1c",
    "signer": "0x1c1Be0a4f194E6158e5DC3d133B55fC7f8867Adf",
    "userId": "214494078"
  }
}