{
  "manageEntity": {
    "action": "Update",
    "entityId": "900342656",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xebab3ec45f6b31ca908307f86fb0cdaf7689f307a978f90ed75368aac3cc0d56",
    "signature": "0x6e6e88de8ba81e0c8d913385aae1ac53f1d7692643cd6ee22f2ff91f4b6394a2482fcca9d94fc382a9d049a8f44406c714b34be43e0800c89eb7322df1a055d71b",
    "signer": "0x2d00665Ec1AC27508FC4aEF572E680bc2091047b",
    "userId": "900342656"
  }
}