{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x97267e29243e976aef3e0275419cafcadc35b95dee5619f5132f85a28521b632",
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    "signer": "0xe7329D7eBdA1f581Da1FFF9Cf55eF76Cced6323a",
    "userId": "799024490"
  }
}