{
  "manageEntity": {
    "action": "Save",
    "entityId": "90381",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x173aa64f3dcb034fdb9703a12f0934e6c1b6093e4db51d87831c8e866a8a3604",
    "signature": "0xf88914246f2d6912d963c8816d94937040e407fa730c16299fdf96316d40e0dc06d6a4ce22446ce3d96d2507fd709075f761abfcdff72bcc7962825bed8e36fa1c",
    "signer": "0x85F3dE6E533ca5A34C56A0eE6d30251a26c4B00f",
    "userId": "846467322"
  }
}