{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2c1337036e27821588136004d13b8c0907d2911a00796cc2e519e1f4fe91d10a",
    "signature": "0xdea1e6702a6a2439e576b0a681df56ccd7cb03ed9cad0bcc0a9188eff20298494c900bc45df853c973d029e3d2c679e75ef841884efd1cb158343333489bfa551c",
    "signer": "0x74aC9A0a8CcbFa0799AF567008d69FA07b727105",
    "userId": "480700475"
  }
}