{
  "manageEntity": {
    "action": "Save",
    "entityId": "2095850887",
    "entityType": "Track",
    "nonce": "0xfe7aad0bce59d14463eb083be096f7cc308b29f35f9666bbbeaeb1234c6bb0a5",
    "signature": "0x92eaf4b6c4b1b42a60ddc98db9e24f2d18189231445153202e15b1a8f3bd6b006ec1124201cebfb0980e674ce6b8d60f882a3cf8c35a704ca57e59f3060a3fd01b",
    "signer": "0x4810fE66B3A42DA4cb34b622aD9A069C293c6b86",
    "userId": "445042807"
  }
}