{
  "manageEntity": {
    "action": "Update",
    "entityId": "963788362",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xef1fe32cb4ee931fb34edf318b15a18b5a92d03509973a9538404a1aba56a773",
    "signature": "0xb8b4dfe70ffc7624adabd255d5006797388d300aad57122ba9d98d947a1cc1ea3727e3c194c0caf00103bbd734968c6eda45c055013f039b10780eb3360c90ad1b",
    "signer": "0xaC0e591e6FDE4113579B09Ca370F0aC7aF69C08e",
    "userId": "963788362"
  }
}