{
  "manageEntity": {
    "action": "Update",
    "entityId": "152334447",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd3f974496486cacfbb9fe3ad7c4b8dcab0e4f073a40625792a9182cd79fb6dea",
    "signature": "0xaa34425d1a8fe272a29eb66cb384921de014ed43fafcc998e9a7464a1a634377012f98837bc64b5d3dc40fdbd4a6b104c04501af233eb7fa161e6faa1263df391b",
    "signer": "0x6327cd959Ed1548587D21Ea0cffa20C9A82c720E",
    "userId": "152334447"
  }
}