{
  "manageEntity": {
    "action": "Update",
    "entityId": "857082800",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3c2fcb129f55974f25b677725afab1d78e29f8770aac09b3df128cb9ce111cd9",
    "signature": "0x42bcfe6ac4220f248adb7bdb05b7500894a770fc4d9fb6b4d0648fbb3da1283220d0355498ac49ac6ac103ab63354ada0be65b6249af2dd91e8a3340da3444101b",
    "signer": "0x464214f6c35114923EB54E20bdcb2c8Fe68E5EDB",
    "userId": "857082800"
  }
}