{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe4e2dcff87f290f04ba65140a6deaa2dd98e855603c74bfa5bf9ae31c934b5c3",
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    "signer": "0x4beAFF929C5D063D9a6684221804dBA168a6f842",
    "userId": "786204867"
  }
}