{
  "manageEntity": {
    "action": "Save",
    "entityId": "1492324016",
    "entityType": "Track",
    "nonce": "0x27e50c4ced921cc93ebb17ab19063d7a18c2a70f60dd776c3b0bee0bf2c06022",
    "signature": "0x794a24dc1b50d600b37f83638e7a254445b5d454c4833f1ee8cee489f98db5182886bfb12da7d2774f20ee4b761dc9698be60fcdc919b9672dfe7d9c96c74e0d1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}