{
  "manageEntity": {
    "action": "Update",
    "entityId": "551219339",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6d76cd35ad77ad0e0799441370dbb18d4c515d8f910cac1752b6dcf4a292e29a",
    "signature": "0x9eba64f21c8428f0583d6ef2f978d0ca334915e5049c34c00a16a607a0f764a25e257c3ab08a78e3363a1243e0ca14250833e9e8e6949b251b6b8b20d3becc6a1c",
    "signer": "0x825dd37a722dD88E702CAB18bBF6e5cE157209A0",
    "userId": "551219339"
  }
}