{
  "manageEntity": {
    "action": "Save",
    "entityId": "1842990572",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xefbeec443df09b4bcb50388937f1cac6f7004337c3b040e213ed06ac75326522",
    "signature": "0xca8c14d15c0477a3d127329beae2052934eaea1fbe62f34f7f751096d1107862505651f70486c3da6f35ff116ca5692edfec0f66ebfc5f99e4ef6f6eb331d1c21c",
    "signer": "0xbd08d39c7eF0c2f1aF7E4989fF8e283b743B32ab",
    "userId": "333508153"
  }
}