{
  "manageEntity": {
    "action": "Update",
    "entityId": "406716751",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0d9d97453c633df14aacf347e063284edfbab0ca395a61d4aca0d4f695019d97",
    "signature": "0xb58e5651353fab3747422bd65adc141ca413e0ec2e51dfcd1fa0ce96415872b0666839195e41b002cbcb9d06fb4bede4c96e664dd39a0a099f02672886649ffd1b",
    "signer": "0x31eba27Ca105bABB3B8590b9A71b07C6d1e7c747",
    "userId": "406716751"
  }
}