{
  "manageEntity": {
    "action": "Update",
    "entityId": "813142179",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8f098d5642ce9a4a466b6eb73b5bee30e85cab4ec466e3b4f5d0f89f0fa8f7cc",
    "signature": "0x211e53b44e99af34faef4173aa97428a4411a02ce4c4ce7571071b74e9ead05e5dcc8851ce519a293ce3ed5f885ae082df0572662aca2d438c3496d07ae25c161c",
    "signer": "0xf15FD63403ea1176eaa213fd9354417c325a643b",
    "userId": "813142179"
  }
}