{
  "manageEntity": {
    "action": "Update",
    "entityId": "574969152",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa9de892a987e261c54cf1612d42c4e89027505323173e070cfd11ad614b6eac2",
    "signature": "0xfbe1d1006d3c7e4b76be7e765727377bde82cee38b02311f11bc5edbc6073d3f5ba78d3be18e23d9a3c37b4ecf2b041f38d2441acf95ddccbe9aaf99b0bf4ae71b",
    "signer": "0xe0427b2da5a7998032CDfFBf0E481807BFBd4Fb1",
    "userId": "574969152"
  }
}