{
  "manageEntity": {
    "action": "Save",
    "entityId": "1026672107",
    "entityType": "Track",
    "nonce": "0x506755ab44e6397ff689a8cf64b932844ad5acba724c1c20e3f08e00144e249f",
    "signature": "0x3dd176d7e9f34c8c08064367f6303a5193bf9907f286a71acb941073513903815c8ccc9a219de722d72080b9523ef98c853deef687ef19fbf1c352207f1268bf1b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}