{
  "manageEntity": {
    "action": "Update",
    "entityId": "183915544",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd5bedf25ae3715fbe15e44a5afbabfecdef3253c76d652a59b92327958e74099",
    "signature": "0x35fc56d3128b8171d0a2a4a2a7e13e7093e501b4dcfb784da1b0062f292fa6c145391e5d9c541e7dcc67804e495907219fa541de5bfd23d1a3416a488aae59f11b",
    "signer": "0xF0Ce74234a82af7CD828f6f3cB69D1c5E8c26620",
    "userId": "183915544"
  }
}