{
  "manageEntity": {
    "action": "Update",
    "entityId": "817250868",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2b1ed9f9cd6a5c0436255719823e2587be66462b88f69ab5c7be760493547a92",
    "signature": "0xd92cbf594050f0146e2162b4ee66a2ebd6622ab7b287d6468e846e5350bb83071e436778a85e28c396572c3ba624e118f4f7be7292bff1a95d66f0fc72cefee01c",
    "signer": "0x875B2817981A98b3c096D69b3917097032fabb1B",
    "userId": "817250868"
  }
}