{
  "manageEntity": {
    "action": "Save",
    "entityId": "1886116650",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbdec7e3fed5cbd508adc774c84222245dcff93e642e2a7c4ce01791e71137a34",
    "signature": "0x83998bfc9ed1f1ce92878da7e29dbd320f02a710664e2b95ee88c0a6bb72c81a34bcf37cd325f9ae48f253b2690f689b44176433eaf965e0fba4e60cdae0f1041b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}