{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2e04a6952c92ae013cfa8a51425b46157310cfaad47918f0a74e9d341a638215",
    "signature": "0x11905784109a80448af38608c25c05a665dfe8e61e5acc696982d7fb04cc28d513d8a7e7d3266242c8f1183256a22f8a28afcc81151456e3b5f4d1f403d4b9ac1b",
    "signer": "0xAeA5541F304246A9eB4CC1D378d45e3E682358C1",
    "userId": "936312438"
  }
}