{
  "manageEntity": {
    "action": "Save",
    "entityId": "595064",
    "entityType": "Track",
    "nonce": "0xe093eab5644a1a63e1c9d4e82cef21624a59737305995c1509e42d6de325b0bb",
    "signature": "0xfd17d382453cc5e62d231f5333a443ccbb5fcb3f6b41a89c0d49b1509cf06e6a7672a8c31dc90e7cc226795412c27fbca914bf7bed65c83caa813f3ad2807a8f1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}