{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x53adf5da88a718a0f473f6a441af3931e95e860ce72512648eefbfffe13fccd8",
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    "signer": "0x7eDd588D6dbD5749DfaEc053aCC9D43742c496d5",
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}