{
  "manageEntity": {
    "action": "Save",
    "entityId": "1690154114",
    "entityType": "Track",
    "nonce": "0x2afc471c72e84771cf1003257f850ae6ba82bbd6755e57f047e83b19da9bbc5c",
    "signature": "0x296fcf5602c04b2854a72533caa016addc0609c50d236d61a8c3cbb935d1aaf5675851dbd0dee24ae593bf75d7fcb9f13d405d475cd06f034712f75810a134fb1c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}