{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2820eddadde6fdee3b30fde0291d99fe91888184e243cefc6be4c5d4a80761f3",
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    "signer": "0x6e23222409a5771691c6C888A82af4A2123edb02",
    "userId": "888206337"
  }
}