{
  "manageEntity": {
    "action": "Update",
    "entityId": "837323124",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x079bfa6fdff4cbbd15186847240e129492904b354aa8a2431f3f9de9124924f3",
    "signature": "0xaa0986596f55ad01d9770fdd4d2c4d31457a00b0db59951e3d71c7d2c94ae834713c7c25a6da9c9a5285e4e748f5c4cd1a419503cad3f09d8a504d9ef878d0ab1b",
    "signer": "0xD3F0170aBf4a7ec16130f1Af3E569eEb37f5C63A",
    "userId": "837323124"
  }
}