{
  "manageEntity": {
    "action": "Save",
    "entityId": "1706832362",
    "entityType": "Track",
    "nonce": "0xb765f71cccddd6ae87193513d660fd718471347163444cfae3ab8133f1b9a969",
    "signature": "0xdcbfb1c2a16ad3f1ba18a0ecce9756562dd952d50af0973fa95a6ef32f32e5e32b4c7fefcc50e83cd5c7d4667559d555dd7b5f3ba1c0a6e3eed372cdb658dc551b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}