{
  "manageEntity": {
    "action": "Update",
    "entityId": "234225215",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xda6842bf669904403b1699cdb5c7f48f8cb8058659913e7b76807fb50b5e1a52",
    "signature": "0xe4c789f5df52827fa35886fcb6ff2551892fe025350c2ae9001487a111bf5e3814c9e99e7a81543006b181fbb20b2887c4d88e8e31755e1da1ea75e0553863381c",
    "signer": "0xFc16cd3d00cc0E9F656756889A407244651ceCaf",
    "userId": "234225215"
  }
}