{
  "manageEntity": {
    "action": "Save",
    "entityId": "1698645899",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf9be919f74fc19680492a515d76808246f03a2406324a6f3aa545a9739bcca99",
    "signature": "0x460789ca067bf8713a66c3eda12d6296090dd4d4779cebdfd6d4fbf4fe00941b544a34178a89958f09612da6443489edd2b3ca5d384a2a0d0bbd1539c4e78e491c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}