{
  "manageEntity": {
    "action": "Update",
    "entityId": "830758970",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x44d37822b92cde8e0998797e02ac119dc0318c116dd251810c4baf27c0537b87",
    "signature": "0x3e4f9cffb8167d3f57cddfdca7f2cd669c252a8ced39973541834ee2bfeb05a641d60308c05df779d5c50423da45ed93749ea9a58252089c4b582f68d1fb90c21b",
    "signer": "0x86664D79Be6EC6488E337DC39F61A37f8Bf5d22B",
    "userId": "830758970"
  }
}