{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x83788ee212b2585d1f6ceddfc1620a794b675927dc0bec3e3d329ef23d737173",
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    "signer": "0x0a058A8C49ae355B4721873dFA85790f1148Fd95",
    "userId": "55106628"
  }
}