{
  "manageEntity": {
    "action": "Save",
    "entityId": "64907757",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x363ad2659c240807906cf82c1e208f74e19b2a99c9e37d4798f7c1f0b3a85a46",
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    "signer": "0xca797dA7dCB793742623d55EA81fb92A9566B550",
    "userId": "363062902"
  }
}