{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x36cc6509ecc731831efb6c54b2de6c3ad60c763f23b21973dbcc22af4e1b8fd3",
    "signature": "0x2d484dfd9cfba01b4d9ac44d05392ab101f01dfc3f781a2fcf807f53f9af52aa554e91391aa2827c5ed3a3d69ba63b128d0584185923f4bec25acf113ef6a9ff1b",
    "signer": "0x8723f4444838195bf57783CEEB5779429AAf83D4",
    "userId": "61784393"
  }
}