{
  "manageEntity": {
    "action": "Update",
    "entityId": "51143394",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x12fc71cf5e66c75e49cef9d67350327649fed89c713b79c967549403bb4fb32d",
    "signature": "0xe9f97f7ffccdcba72b93dff03cd0212e6eae176c2dba2a1f653f32a6922537c500c9cd95b529146bcc09351d221b48be3702c75e4c5290de2eb710b44a903cb51b",
    "signer": "0x5d2ABA274DbF55C18c09F96C93Adcf12A8c189Ac",
    "userId": "51143394"
  }
}