{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf601b83b916261ccad62ab36d860e2582138d16bfbc40d3b491b210562da7254",
    "signature": "0x3ff536823f792e1121ff7746606ffdf6a3a76e5584e848fe1ba22ffc3eeb55c330b9df2bdf3ccec495a5510f20c4c3d75eb29bf5c48931d05bc2e2c5940d3e9a1c",
    "signer": "0x1036B9509A6420a247d328c387cE63796b59db5B",
    "userId": "47252302"
  }
}