{
  "manageEntity": {
    "action": "Update",
    "entityId": "123476805",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc24d77c694da3113c5971401fd368b7d85394a265ed9dda87a42b3effc415228",
    "signature": "0xdc5621f83577df995e1e98099444014f1fe1683975b880f7ac48af5dda14a9be36a94f04fafabeef0c7f69db951e92ae7b708c6707360306924fbfbb363360191c",
    "signer": "0x436348f483C2aeabDB9499FBa58fb6E1ECBAC2AF",
    "userId": "123476805"
  }
}