{
  "manageEntity": {
    "action": "Save",
    "entityId": "70183301",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5ee92404b2f45308252cd3ef957f7015be898e21c754c36647f85bb2d456c384",
    "signature": "0x092783c8df818b4ac31bd8f60567f11d6c5abfe7c7d3132cc91f2b72191e63113c52b78d9ea7c20fb38e5f8feb3b72ad80d878e4ea540a8d73a58c0021ee1cda1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}