{
  "manageEntity": {
    "action": "Update",
    "entityId": "220845434",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7d5efaafe9b5d32b57204d73343c7f3e3d36754fdad7c56b9f6b46252f81f5d2",
    "signature": "0xa0999ea0a7692d104ba29a2246ab136e0aa646120f3ea7384f730f504f39ef413d27bca852407f26426344532d29b9668bbe08e0932da43c650b37de8340b3561c",
    "signer": "0xA783F93af41452c2b898E2f315B9Ca2f2bb9ec5c",
    "userId": "220845434"
  }
}