{
  "manageEntity": {
    "action": "Update",
    "entityId": "123628236",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9c50ab32445bf953d33b7d77fadd18d4c80b35b895772fdd6a6410dd5cb242b4",
    "signature": "0x1f842b527d6a694ea006be5a310c591c045eacc37ecb8410a1659f81067a83492a95420dd98b7d1df5b6687f135fe9527ac1fe196418ae04090e38d5ea4bbfe01c",
    "signer": "0xa8a2Ea2f7568E67353A0005D29D9c9C7C62234Cd",
    "userId": "123628236"
  }
}