{
  "manageEntity": {
    "action": "Save",
    "entityId": "2096042747",
    "entityType": "Track",
    "nonce": "0x1617795b92ad568b9d6191d9a765824aa052118c4771fb46a3bd6472b6a38f9c",
    "signature": "0xc07a256bd1727107a2a319ec6dad019895a44ccbf182e958173702c3d793cc0e1da651ab1904ddd632f41cddbd2a6e5db2791f16c88fada49ee578271500f9121c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}