{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1ffcb845f27896b413f415d09fe9b38b0660df9053a4e7297b14f2bc049acab7",
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    "signer": "0xd4a8375fBc27B9E2bd5Aed00bbeddd2eDC36BCCc",
    "userId": "884906086"
  }
}