{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa29312519871b1c9917d38273caaa51883f49b3e14fd2bb1836b59c8c0d8b8a",
    "signature": "0x5b14527c36198242a802c8ce9fa170fe0ff84d22223f8503ac589bee63029dfc28bbc2f2587176d49df693162fc3840c9a07df1a3e500a9495c709703a4275c91b",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}