{
  "manageEntity": {
    "action": "Update",
    "entityId": "893448136",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9bc4eed59c60e74655018a6e9ebfd5a0ab83a05f24bf9c465ce986064a035b1e",
    "signature": "0x2c5901342b2d47d309b519a08f066ab81f9f12ed07675dc0fa4cfad91727ab1c0fe61aad0898c4ae44030ff40f8b0c78d0d5e395ad42f333994e3a2de7b5c8041b",
    "signer": "0x1F64f5d2AFd0Ed70FcA6Bb3Be6B0F4BDc6e4c5DB",
    "userId": "893448136"
  }
}