{
  "manageEntity": {
    "action": "Update",
    "entityId": "173675496",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x312bca2cdb077dcdb8bc32b1d04c59a55f80f523f5d0f4e470506c9b606671ae",
    "signature": "0xe1cf9a03e7bb64dabc41b489830a70d3c69aeba9ab3827b4d0beb272bd492ab63a12082f13cb0644917276634745f0f92053cd843faa0ecc433c23d3b286e78b1b",
    "signer": "0x4FfB422B87Dd21fc7607B20170C5eE323e1104C0",
    "userId": "173675496"
  }
}