{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x41ca133d46f23a10fdb262695ce56d31cd71b05af43ba271af974bbd6b74fc87",
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    "signer": "0xA98fd93042137dcfC90267335A9677328f2cd3FF",
    "userId": "336593287"
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}