{
  "manageEntity": {
    "action": "Update",
    "entityId": "785201",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7f9782d8d0b535816989e25f13faf78b800e6b1c17812c50358ac46da4024a3b",
    "signature": "0x3cedd3c4c9f4724a1ebf19031ff09883980dc1bddfe081e8ce179d88014644d35f57ee3a4a687661d6380d2c61d23c9cf2c201f3d73f1c4d04964c7ebdbe81e81c",
    "signer": "0x7C3854df2708D5dc9d22bA310Bc0f73C074f0321",
    "userId": "785201"
  }
}