{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6a6355714a102afc97ddadacf4156b2b71e571257df9ef1488072a3e66d86293",
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    "signer": "0x603e7BaB44b5BaAd8BC20BeAf02211C3db340CDA",
    "userId": "850164388"
  }
}