{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0b1c9fbc65930a624c84335b5804efc487f9423b7d5f91f59213d414ce551527",
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    "signer": "0x2D597fe412aFD27DE182CE64884648F1476D2cB5",
    "userId": "532527541"
  }
}