{
  "manageEntity": {
    "action": "Save",
    "entityId": "342733203",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdaadce51b29009f74842ff8d2aa04f7032e4f54564072f547b6f2c703fc6e075",
    "signature": "0xf305ae039e34780e36b1599df203296f5991ad02172d24fe3303c1721bf0d7566fa2bb7894073807b58cdd186e9e71ef80fcd5f6eb5b6c67c9878f2a88806c2d1b",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}