{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9213b6d47691cf5e7a6dd2d2d4b187a7e4cba41b93862fdf955fe313c3251684",
    "signature": "0xb4c654f2c247eb3c5f1b062f735d1bdc0508db98aef19c3d4c4377d4fab392471fdca20d817e05db001ae1e0ba9c52a2d23d5c6853820fc39b431d36e3e3dadc1b",
    "signer": "0xd8cF9b24Cf8c3c0e8Da4e5ddC4f6d3B449Ba6d7E",
    "userId": "606849837"
  }
}