{
  "manageEntity": {
    "action": "Update",
    "entityId": "378692055",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x958951e30447b1cb6ced9a1ac34b2be32ed1c6e502212ee57752c5dc2957fb29",
    "signature": "0xd5ae7e5b1096c4349ac6a71ec33e943bba809d59d2415382e8921bf9acaee6d013f249b15a4310db21488655b92bc997095c47449831901cbda0caf65d5d78141b",
    "signer": "0x9b751fABFcb2A9E8e312B547Becca1C8812efc97",
    "userId": "378692055"
  }
}