{
  "manageEntity": {
    "action": "Update",
    "entityId": "457613220",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2a56da2d3ee76243b0228041ea16386ed78c86461dbe2db719a03259bb54926d",
    "signature": "0xc7f7fcc2423bd3ffd660d149028d7e1af6f0f5cc826bece14472c4b5c18137662e78b34b8f7332e9e7a417781fe57791698de3fc7c342f4cfee82eb8715b26241c",
    "signer": "0xd22a057BD42992d379e97B312d868d907D7335AF",
    "userId": "457613220"
  }
}