{
  "manageEntity": {
    "action": "Update",
    "entityId": "905286926",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7398aa25020ef5ca5f6033b5bffa9fceaee0d3c3ec1cc283c872db819753af44",
    "signature": "0xc1d160d4efb1f465f5e3d6da32e0f4bf137f46b0e52d6d6c87ef703ed7e4369f7225fe28f6112020db113af865fb5bbfbbc8254fb194da443278b2ac17ef1e8c1c",
    "signer": "0x407A885e58988dA0Be1611f90EEc21139696A6c0",
    "userId": "905286926"
  }
}