{
  "manageEntity": {
    "action": "Update",
    "entityId": "615050311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4b935457b2f57c884d59d8c0150e2ea858d571b0838337006ed866ee651131b2",
    "signature": "0x4bf90903b0d5445b9201dc67ac27988511872d131602937ed4e7eea4a43850b00643668e3d4db286d036972ad940d87014b59b8297a658e30ca09f1f43c4ad681b",
    "signer": "0xF6A602938bf3C2035f253F89b50e93110F9EF4d2",
    "userId": "615050311"
  }
}