{
  "manageEntity": {
    "action": "Save",
    "entityId": "1398007808",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc07b8e05d72fa9fde38c4352f8e6a755d9a7c8fa2b02c7401de3fb9293043f45",
    "signature": "0x2e205b5190a5e316d26e563580c20e73a02f6e630c68c02f69bad462cd5db3be4d4e8276d2cf1bc87c0f9ce3335f8bfb4fafae0acdd7f0b0aebeae56ecc1ea971b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}