{
  "manageEntity": {
    "action": "Update",
    "entityId": "523003328",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8946703c9fedc1e7baeda4e13cf626c8acf2c86512312ae64b49cd342f250f07",
    "signature": "0x66150e9db7912135d22bd9ebabb2f66aadb88d3dd415378e03afe3ea93b9fb5d2266824ef1cc9401a7c95fa480740084519d9d59c2ca677cce823e61745f04fb1b",
    "signer": "0x80AC38525e432888f1bE1e2e6DDffB956029985E",
    "userId": "523003328"
  }
}