{
  "manageEntity": {
    "action": "Save",
    "entityId": "752985",
    "entityType": "Track",
    "nonce": "0x082d26248e08128acaa129f246f2f0be328bcb9acd52b604cc0ad30cce3d6336",
    "signature": "0x182b89e6bea0e830585ce3176d2dc7f1999aa0c5b3daad88de301ad643ea24a603b351521b3bf14835a5e04f8cf6fcb80d6da6b75a8ce48da52e4b9154bc80101b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}