{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa24842ae193c14500c706ae251da57b532dfc1aa071ff4585579f76792c166ae",
    "signature": "0x44c157adf404f78678dff75bc0c4fd00d0ed71f795b81a0bac9e09be66bc92d46be64f744c175be030f1b0cb717f012de6e83b868bf925104e98412ae66446081c",
    "signer": "0xbb3b8C270080b0DAE42411345FCDc6a00369e247",
    "userId": "690093689"
  }
}