{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa07b96790be8c8640ccd707e5dc77185b260c7c173e3b11647c1e08bcaeb8f72",
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    "signer": "0xA6Af26b35D52f2D60A1bd3F464eFbfE8DB2656CD",
    "userId": "555213902"
  }
}