{
  "manageEntity": {
    "action": "Save",
    "entityId": "2138633081",
    "entityType": "Track",
    "nonce": "0xd3f1089d739f17524df2b39b0ed2f8ede92cc399d93a262e973f77f4bc389105",
    "signature": "0x6175d4b3e8c61677f67bed1745ccb226af8e9b5c88237e23d4d25c7f42649169355373b8696e09e6b3200d1fdd57a3685707859b1297523d40bf6d463bcbf6331b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}